Nail-driving mechanism for boots and shoes



(No Model.)

G. MeKAY.

Nail Driving Mechanism for Boots and Shoes.

NO. 241,814. Patented May 24, i881.

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UNITED STATES PATENT OFFICE.

GORDON MCKAY, OF CAMBRIDGE, MASSACHUSETTS.

NAIL-DRIVING MECHANISM FOR BOOTS AND SHOES.

SPECIFICATION forming part of Letters Patent No. 241,814, dated May 24, 1881.

Appueauon med March 29, 1881. (No model.)

To all whom it may concern Be it known that I, GORDON MGKAY, of (lambrid ge, county of Middlesex, State of Massachusetts, have invented Improvements in Nail-Drivin g Mechanism for Boots and Shoes, of which the following description, in connection with the accompanying drawings, is a specification.

This invention has for its object the production of a mechanism for driving nails in soles of boots and shoes. United States Letters Patent No. 189,834 and No. 189,837, heretofore granted to Lyman R. Blake, show and describe a nail partially inserted into a sole, to be subsequently driven through the said sole and the edges of the upper of the boot or shoe into the usual inner sole, the points of the nails being clinched upon an iron or metal shoe-last.

The mechanism the subject of this invention was devised to drive nails partially inserted in the sole, as represented in the said patents.

In this invention I employed a stop, against which the side of the nail is brought or pressed just prior to the descent of a hammer which drives the said nail below the edge of the stop, whereby the sole is so unobstructed that it may be fed forward for a distance sufficient to bring the side of the next nail against the stop,when the first nail is driven below the stop, and the same operation repeated. The sole, as herein represented, is fed forward mainly by means of a feed-wheel, having preferably an indiaruhber or other friction surface which acts against" the edge of the sole pressed against the feed-wheel by the operator, who holds the shoe in his hand, or supported by a jack common in pegging-machiues.

Figure lis a side elevation of a sufficient portion of a nailing-machine to illustrate my invention. Fig. 2 is a top view thereof 5 and Figs. 3 and 4 are details, to be referred to.

In the drawings, A represents the frame work, having suitable standards a to form bearings for a shaft, b, driven by power applied to a pulley, c, the said shaft having secured to it a large cam, d, and a worm, c. This framework has also standards f, to receive a rockshaft or pin, g, which serves as the fulcrum for the hammer-arm h, the forward end of which is pro/vided with a hammer, t', secured thereto by the nut j applied to the hammer-shaft eX- tended Ihrough a socket at the end of the arm l1.. The hammer-arm h derives its motion from the cam d, a stud, l, or roll carried by the said arm entering a groove in the cam d.

The feed device m, preferably a Wheel having an india-rubber or flexible friction surface or periphery, is mounted upon a short shaft, n, having at its lower end a bevelgear,o, which is engaged and driven continuously by abevelgear, p, on the inclined shaft q, it having at its other end a Worm-gear, r, which is driven by the worm e on the shaft b.

The last s (represented in Fig. l) has an upper and inner sole applied thereto, and an outer sole, t, placed in connection therewith, as usual, the outer sole having set up and partially driven into it a series of nails, a, as provided for in the patents hereinbefore referred to.

When a shoe the sole of which is provided with nails partially driven is to have the said nails fully driven into it and through the edge of the upper and through the inner sole, to be clinched upon the iron or metal-shod last, the shoe held in the hands of the operator or supported on a jack, like that used in pegging-machines, is pressed against the edge of the feedwheel m, which latter acts to move the shoe horizontally until the side of the nail next to be driven meets the stop to, as shown in Fig. 3, when the hammeris made to descend, strike the head of and drive the nail into the sole. As soon as the head of the nail is so driven below the stop the feed-wheel immediately causes the shoe to be again fed forward in the direction of the arrow, Fig. 3, until the next nail meets the side of the stop,when it is again driven by the hammer, and so on.

It is a part of myinvention to use the nails set in the soles for holding the sole in place, or what is technically called laying the outsole77 by driving, by hand or otherwise, one or more nails on the sides and the toe and shanks of the shoes, and leaving the others to be driven by a machine. When so used the feed has a peculiar operation, which is to carry the shoe beyond the driven nail and bring the next one not driven under the action of the hammer.

The feed-wheel mis, it will be noticed, ro-

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tated continuously, and feeds the shoe, when the shoe is free to move, and slips on the edge of' the sole when the movement ot" the shoe is arrested.

In order that the action ofthe feeding mechanism may not be interrupted byincompletelydriven nails, or any roughness on the head of the nail, I have provided a recess or slot, r, in the under side of the stop w, which allows such obstructions to pass the stop, as shown in Fig. 3. This recess or slot in the stop is made bell-mouthed in shape at the side next the hammer, to insure ready entrance of the head therein.

It is obvious that the hammer ma)- be aetnated by a spring to give the blow, and lifted by a cam, as is common in pegging and nailing machines.

I claim- 1. Inamachine fordrivingnails,as described, the stop to arrest the nail and the material in which it has been partially driven under the hammer, in position to be farther or completely driven, combined with a hammer and means, substantially as described, to operate it, as set forth.

2. The hammer and means to operate it, substantially as described, and a stop to arrest the nail, combined with the feed-wheel m, against which the material is pressed and by which it is fell forward, substantially as described.

3. In a machine for driving nails, the feedwheel m and its shaft, and means to rotatcit, combined with the hammer and hammer-carrying lever, having; its fulcrum at right angles to the axis of the feed-wheel, and the cam to operate the lmnnner-lever, substantially as dcscribed.

4. The continuously-movingfeedwheel, substan tially as described, to feed the shoe when the shoe is free to move, and to slip on the shoe when the movement of the latter is arrested.

5. In a nailing-machine, the stop w, provided with the recess e, substantially as and for the purpose described.

6. In a nailing-machine, the stop ze, having the recess provided with the bell-shaped month.

In testimony whereof Ihave signed my name to this specication in the presence of two subscribing witnesses.

GORDON MCKAY. Witnesses HAliLEY I. FAIRFIELD, WILLIAM L. ToBEY. 

